Automobile sash lock



Dec. 29, 1936.

D. 1.. CHANDLER 2,066,287

AUTOMO BILE SASH LOCK Filed Jan. 17, 1956 2 Sheets-Sheet 1 29, 1936. D; 1.. CHANDLER 2,066,287

AUTOMOBlLE SASH LOOK v v Filed. Jan. 17, 1936 2 Sheets-Sheet 2 Patented Dec. 29, 1936 UNITED STATES PATENT OFFICE AUTOMOBILE SASH LOCK Application January 17, 1936, Serial No. 59,517

1 Claim.

My present invention relates to locks and more particularly to automobile door sash locks which are adapted to lock the sash in any desired position and at the same time provide a handle for moving such sash.

My invention provides a sash lock which looks or unlocks the sash and slides in a horizontal plane within the door casing raising or lowering the sash as the case may be.

The principal object therefore, is an improved lock for automobile door sashes;

Another object is an improved sliding sash lock which provides a brake to lock the pinion which engages in a rack upon which the sliding lock operates, and

Other objects and novel features comprising the construction and operation of my invention will appear as the description of the same progresses.

Referring to the drawings illustrating the preferred embodiment of my invention;

Fig. 1 shows the inside mechanism of an automobile door from which the upholstering has been removed and to which my improved lock has been attached;

Fig. 2 is an enlarged side elevation of the look as viewed from inside with one of the cover plates partially cut away to better show the mechanism;

Fig. 3 is a vertical cross-section taken on the line 33 of Fig. 2, and

Fig. 4 is another side elevation similar to Fig. 2 showing the mechanism in a released position.

Referring more in detail to the drawings, I indicates a door of a common type used in automobile manufacture. II shows a glass sash which is adapted to slide up and down in the door frame II]. The sash II is raised and lowered by means of a spring counterbalanced bell crank lever I2 pivoted at I3 to a brace attached to the door frame. A lever I4 is attached to the bottom of the sash I I and connects with the bellcrank lever I2. A lever I50, connects the bellcrank lever I2 with the casing I5 of the lock through a pivot I6.

Attached to the door frame is a tubular rack H, the bottom flange I8 being provided with openings which form the teeth of the said rack. A second casing I9 encloses the lever I5 and rack I'I being spaced apart by means of spacing members 20 and 2|, the rack I'I sliding on the under edge of the spacer 20 and the top of the spacer 2i acting as a guide for the said rack II.

Mounted in the casing I9 is a shouldered pin 22 which engages the inside surface of the rack I1, the toothed rack portion engaging with a pinion 23 which is journalled in the casing I9 and the cover plate 24. Between the cover plate 24 and the casing I9 and fixed to the pinion shaft 25 is a drum 26 which turns with the pinion 23 when the lock is moved along the rack I1.

Surrounding opposite sides of the drum 26 are brake shoes 21 and 28 having pivot pins 29 and 30 located at their lower extremities, and a space 3Ia located between the upper arms 21a and 28a. The arms 21a and 28a are, normally pressed inwardly and maintained under tension by means of springs 3| the tension on which is regulated by means of set screws 32 located in right angled brackets 33 located on the casing I9.

Pivoted in the cover plate 24 at 34 is an operating handle 35, the lower portion of which forms a tongue 36 which normally lies in the space 3Ia between the arms 21a and 28a.

When the apparatus is in the position shown in Fig. 2 the brake shoes 2'! and 28 are engaged tightly around the drum 26, the amount of friction present being regulated by the springs 3I. When it is desired to raise or lower the sash II, the lever comprising the handle 35 is pushed to one side or the other separating the brake shoes 27 and 28 and releasing the drum 26 and by continuing to apply pressure in a horizontal direction on the handle 35 the lever I5a operates the window elevating bell-crank lever I2. Stop pins 3'! limit the throw of the brake shoes 21 and 28 as shown in Fig. 4.

Having thus described my invention what I claim as new is:

A sliding sash lock for window sashes and the like, the said sash lock comprising in combination, a tubular rack attached to a permanent portion of the frame of said window, rack teeth formed in the bottom flange of said rack, a lock casing slidably mounted over said rack and having a stud fixed thereto the head portion of which is slidably engaged behind top and bottom flanges on said rack between which flanges said stud is adapted to slide, a pinion pivoted in said casing the teeth of which engage with the rack teeth on the bottom flange of said rack, a brake drum located on said casing being solidly connected to said pinion, brake shoes pivoted to said casing and normally surrounding said drum, springs located between the free ends of said brake shoes and lugs formed on said casing and adapted to maintain said brake shoes in a fric-,

tion engagement with said brake drum when said brake shoes are in a normaiposition, a. hand operating lever the bottom end of which is pivoted on said casing at apoint within the free ends of said brake shoes, stop members for said brake shoes located adjacent the pivoted ends 5 of said brake shoes.

DANIEL L. CHANDLER. 

